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[1]YANG Yonghui,WU Jicheng,GAO Cuimin,et al.Effects of Irrigation Mode, Irrigation Volume and Application Rate of Nitrogen on Annual Water Use of Wheat and Maize[J].Research of Soil and Water Conservation,2020,27(04):134-141,148.

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Effects of Irrigation Mode, Irrigation Volume and Application Rate of Nitrogen on Annual Water Use of Wheat and Maize

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 27 Number of periods: 2020 04 Page number: 134-141,148 Column: 目次 Public date: 2020-06-20

Title:: Effects of Irrigation Mode, Irrigation Volume and Application Rate of Nitrogen on Annual Water Use of Wheat and Maize

Author(s):: YANG Yonghui^1,2, WU Jicheng^1,2, GAO Cuimin^1,2, ZHANG Jiemei^1,2, PAN Xiaoying^1,2, HE Fang^1,2, WANG Yue^1,2, WANG Yun³; (1.Institute of Plant Nutrition & Resource Environment, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China; 2.Yuanyang Experimental Station of Crop Water Use, Ministry of Agriculture, Yuanyang, Henan 453514, China; 3.Digital Learning Resource Center, Hebei Radio and TV University, Shijiazhuang 050080, China)

Keywords:: sprinkler irrigation; surface irrigation; irrigation quantity; nitrogen fertilizer application rate; water use

CLC:: S275.3

DOI:: -

Abstract:: In order to clarify the mechanism of annual water use of wheat and maize under different irrigation methods and different combinations of irrigation with nitrogen fertilizer, field experiments were conducted to investigate the impact of irrigation times(0, 1, 2, 3 times, 450 m³/hm²)and nitrogen application rates(wheat season: 180, 240, 270 kg/hm² and maize season: 210, 270, 330 kg/hm²)on growth, yield and irrigation efficiency of wheat and maize under the conditions of sprinkler irrigation and surface irrigation. The results showed that sprinkler irrigation was more beneficial to the increase of SPAD value of wheat leaves than that of surface irrigation; under different irrigation conditions, sprinkler irrigation was more useful for the improvement of photosynthetic rate of wheat, and the photosynthetic rate of the treatment with N270+3 times irrigation was the highest compared with other treatments, followed by the treatment with N180+1 times; at the moderate and low nitrogen levels, the yield of 2 times irrigation was the highest, and that of sprinkler irrigation was the highest under the condition of 1 times irrigation; however, the yield of maize increased with the increase of irrigation water at low and high nitrogen levels, while the yield of maize at the level of medium nitrogen(270 kg/hm²)increased at first and then decreased, which was relatively higher compared with other treatments; for the annual system of wheat and maize, the total yield and irrigation efficiency of wheat and maize under sprinkler irrigation were basically higher than those of surface irrigation; under the two irrigation conditions, the total yield of wheat and maize was the highest under the condition of the annual nitrogen application rate of 510 kg/hm² combining with 2 times irrigation during the growth of wheat and maize, respectively; under both irrigation conditions, total irrigation use efficiency of the annual total nitrogen application rate of 390 kg/hm² with total irrigation of 900 m³/hm² was the highest compared with other treatments, followed by the treatment of medium nitrogen(N240+N270)with irrigation 1 time, while total water use efficiency of annual total nitrogen application rate of 510 kg/hm² combining with annual total irrigation of 900 m³/hm² was the highest under the sprinkler irrigation, and that of annual total nitrogen application rate of 510 kg/hm² combining with annual total irrigation of 1 800 m³/hm² was the highest under surface irrigation. These results show that proper reduction of irrigation was more conducive to the improvement of annual total water use efficiency of wheat and maize. According to the comprehensive factors on increasing yield and saving water, it is recommended that the annual irrigation and fertilizer mode of wheat and maize would be(wheat)N240+(maize)N270+2 times irrigation with spray irrigation(450 m³/hm² per time).

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Last Update: 2020-07-09